| Autor: |
A S, Shashkov, Iu I, Kozlova, G M, Streshinskaia, L N, Kosmachevskaia, O V, Bueva, L I, Evtushenko, I B, Naumova |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Mikrobiologiia. 70(4) |
| ISSN: |
0026-3656 |
| Popis: |
The type strains of the cluster "Streptomyces lavendulae" species with a low level of DNA-DNA relatedness were found to contain different cell-wall carbohydrate polymers, whereas the species of this cluster with a level of DNA-DNA relatedness of about 60% contain similar or identical carbohydrate polymers. The type strains Streptomyces katrae VKM Ac-1220T and S. polychromogenes VKM Ac-1207T synthesize mannan with different amounts of alpha-1,2- and alpha-1,3-substituted mannopyranose units and a small number of 1,3-poly(glycerophosphate) chains. The cell walls of S. lavendulocolor VKM Ac-215T and Streptomyces sp. VKM Ac-2117 were found to contain a hitherto unknown teichuronic acid, whose repeating unit is a disaccharide consisting of diaminomannuronic acid and N-acetylgalactosamine:--4)-beta-D-ManpNAc3NAcA-(1--3)-alpha-D- GalpNAc-(1--. In addition, the cell walls of these two streptomycetes contain beta-glucosylated 1,5-poly(ribitol phosphate). The cell walls of S. virginiae VKM Ac-1218T and S. flavotricini VKM Ac-1277T contain the same poly(glucosyl-glycerophosphate). The results presented in this paper are in accordance with the DNA-DNA relatedness data published earlier and indicate a taxonomic significance of the structure of the cell-wall polysaccharides for the delineation of pheneticall/related Streptomyces species. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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